DS1642-70

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The NXP/Philips DS1642-70 is a real-time clock and calendar circuit that serves as a critical timekeeping device in a wide range of applications and industries. This real-time clock utilizes the capabilities of Programmable Logic Controllers (PLCs) in a self-contained module, allowing the user to quickly and easily program the clock for accurate timekeeping and automated appointment scheduling, accuracy tracking, and data acquisition. With the DS1642-70, there is no need for an external processor or to write custom software for timekeeping or task scheduling. The device also supports year, month, date, hour, minute, second, and millisecond values that can be read from the register.

The main purpose of the DS1642-70 clock and calendar circuit is to provide precise, accurate date and time information for industrial applications, control systems, and data acquisition applications. It is designed to interface with virtually any PLC, microcomputer, or industrial process control device via a serial port. The circuit interfaces with the distributed control systems (DCS) to provide time-of-day data, tracking, and process status information, including temperature, pressure, humidity, and other related parameters.

The device enables precise timekeeping through its integrated Real Time Clock (RTC). The RTC includes an oscillator that works by continuously adjusting the frequency of a quartz crystal based on inputs from the environment and applied control signals. The crystal adjusts its structural elements to remain in tune with the frequency of the oscillator and keeps track of the precise time and date. By using the RTC and integrated oscillator, the user is guaranteed accuracy in timekeeping with a resolution of up to one millisecond.

The DS1642-70 clock and calendar circuit is capable of detecting and storing multiple events, such as the setting of alarms, with an accuracy of up to 0.001s. Five independent alarms are available to help with time tracking, task scheduling, and event management. The alarm functions support up to 12 alarm points per day, allowing for a broad range of applications. In addition, the DS1642-70 provides an array of alarms and interrupts signals and clock outputs to ensure that events and scheduled tasks are performed on time.

The DS1642-70 has a robust and versatile design, capable of operating in temperatures ranging from -55°C to +125°C. It is also designed to operate at very low power levels, making it an ideal timekeeping solution for mobile, battery-powered, and low-power applications. The high noise immunity, low power consumption, and extended temperature range make it an ideal choice for industrial and remote applications. It is also visually appealing, with its sleek, aesthetically-pleasing design.

Overall, the NXP/Philips DS1642-70 is a powerful, precisely-timed real-time clock and calendar circuit designed for superior performance in industrial, remote, and mobile applications. Its integrated RTC, oscillator, and alarms provide unparalleled accuracy and versatility in timekeeping, task scheduling, and data acquisition. The DS1642-70 is also designed to operate at extremely low power levels and to withstand harsh environmental conditions, making it an ideal choice for use in a wide range of industrial applications.

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